I am studying gull behavior at the City of Seattle Water
Department Lake Youngs Reservoir, southeast of Renton on the plateau
south of the Cedar River. The 500 acre storage lake attracts a large
population of gulls with daily winter peaks of 3,000 of more in early
afternoon. The gulls stay in the middle of the lake and do not feed
while they are present during the day.

I wonder where they are spending the rest of the time and where
are they roosting and feeding. Cedar Hills Landfill is several miles
to the north and does attract hundreds if not thousands of gulls daily
despite a fairly effective overhead wire grid. However, this
attraction cannot account for all the gull movement in and out of the
reservoir as well as the possible destinations.

While Lake Washington, the Cedar River and the lower Duwamish
River may be possible destinations, I would like to hear from people
witnessing gull movement in this area of King County.

Also, Bald eagles are present during the day being attracted to
the large gull and waterfowl population. I would like to learn of
eagle movements outside of this lake.

I would enjoy hearing from anyone on these topics.